Seem to have found a 622 cooling solution that works for me - thought it might help others in the same situation. My 622 is in an enclosed cabinet with glass doors - pretty much had to keep the door open during use to keep the unit running OK (...wife wouldn't let me just remove the door 
). I figured the laptop coolers discussed here would just be moving the hot air around within the cabinet & not help much in this situation.
When I got the 942 last fall, because of the heat, I had used a 2" hole saw to cut holes in the back panel of the cabinet - 4 holes at the top & 4 holes at the bottom to allow some air circulation. This was sufficient for the 942, but the 622 seemed to have problems with DVR playback freezing, etc. if the door was kept closed. First tried a small PC cooling fan (don't know the correct term - we always called them "muffin fans") attached to the back panel over one of the top holes - blowing the hot air out of the cabinet. However, this made an enormous amount of noise - probably reverberations from the attachment to the rather thin back panel - so had to remove it.
My wife happend to see an ad for a small fan on a "flexible stalk" with a USB power connection & asked if it would do the trick. At first, thought the idea was a little silly, but the more I thought about it, I figured why not give it a try - only $9.99 for the fan. Plugged it into the rear USB on the 622 & coiled the stalk a little so as to position it where it would blow the hot air out through one of the upper holes in the back panel of the cabinet.
Perfect solution for me!
Quiet, always on, and removes the hot air from the cabinet, pulling room temp air into the cabinet thru the lower holes. The air temperature within the cabinet dropped from ~96 deg F to ~88 deg F. So far (~3 weeks) cabinet door has been closed with no 622 problems.....knock on wood.....
). I figured the laptop coolers discussed here would just be moving the hot air around within the cabinet & not help much in this situation.When I got the 942 last fall, because of the heat, I had used a 2" hole saw to cut holes in the back panel of the cabinet - 4 holes at the top & 4 holes at the bottom to allow some air circulation. This was sufficient for the 942, but the 622 seemed to have problems with DVR playback freezing, etc. if the door was kept closed. First tried a small PC cooling fan (don't know the correct term - we always called them "muffin fans") attached to the back panel over one of the top holes - blowing the hot air out of the cabinet. However, this made an enormous amount of noise - probably reverberations from the attachment to the rather thin back panel - so had to remove it.
My wife happend to see an ad for a small fan on a "flexible stalk" with a USB power connection & asked if it would do the trick. At first, thought the idea was a little silly, but the more I thought about it, I figured why not give it a try - only $9.99 for the fan. Plugged it into the rear USB on the 622 & coiled the stalk a little so as to position it where it would blow the hot air out through one of the upper holes in the back panel of the cabinet.
Perfect solution for me!
Quiet, always on, and removes the hot air from the cabinet, pulling room temp air into the cabinet thru the lower holes. The air temperature within the cabinet dropped from ~96 deg F to ~88 deg F. So far (~3 weeks) cabinet door has been closed with no 622 problems.....knock on wood.....
